Section 19    Maintenance & Inspection  19-22 
 
19.4 Performance Check 
Make performance check on the radar equipment regularly and if any problem is found, investigate it 
immediately. Pay special attention to the high voltage sections in inspection and take full care that no 
trouble is caused by any error or carelessness in measurement. Take note of the results of inspection, 
which can be used effectively in the next inspection work. 
Carry out performance check on the items listed in the check list below. 
Check List 
 
Equipment  Item to be checked  Criteria 
Display unit 
Screen image 
Screen operation 
Can be correctly controlled 
Cleaning the DVD drive  19.4.7 Cleaning the lens of the DVD 
drive 
 
 
19.4.1  Starting Selftest functions 
1  Click on the [Menu] button on the left Tool Bar. 
The menu is displayed. 
2  Click on the [Maintenance] - [Selftest] button on the menu. 
The [Selftest] dialog box appears. 
 
 
The Selftest functions are displayed in the left pane. 
Click on the disclosure button to hide the left pain. 
3  Click on a Selftest function to be executed. 
The execution dialog of the selected Selftest function is displayed. 
 
Selftest 
functions   
Disclosure button